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What’s A Blind Spot Monitoring System in Cars?

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Introduction: What Is Blind Spot Monitoring in Cars?

Driving a car is a demanding task, especially when you are on busy roads or highways. One of the most challenging aspects is keeping track of the rear traffic. Although you have side mirrors, they offer very limited visibility due to blind spots. That is why the right choice is a blind spot monitoring system in cars.

A blind spot detection system offers safety by providing alerts about the surrounding vehicles. It consists of radar-based sensors, mounted on your rear-bumper. The sensors can detect vehicles coming your way and alert you when changing your lane or making a turn.


A blind spot monitoring system alert lights can be placed on the A-pillar near the window. You can also locate them on the side mirror. The system triggers notifications when it detects an oncoming vehicle that may not be visible from your rearview mirrors. It activates at a speed of more than 10 km/h. The sensors can notify you of all vehicles.

Why Should You Use A Blind Spot Monitoring System In Cars?

Prevent Road Accidents


Collisions are quite common if you can not see vehicles coming in your direction. A blind spot monitoring detection system in cars helps you keep track of your rearview. You can ensure no vehicle is coming before changing your lane. Hence, using this sensor-based system in your car minimizes the chances of accidents and injuries.

Drive Stress-free

Driving can be quite stressful, considering the constant honks and traffic on busy roads. Having blind spot detection in cars helps to relieve the stress, to say the least. It takes care of one important job: alerting you about oncoming vehicles. As a result, you have one less thing to worry about when driving on highways.

Works In All Conditions

A blind spot monitoring system in cars is an all-time solution. You can use it in day or night to watch out for your car’s back. Moreover, it works in rough weather conditions, where your side mirrors may fail due to view blockage.

Helpful For New Drivers

As a new driver, assistance can be very helpful. One such assisting tool is the blind spot monitoring system. It helps you make the right decisions by notifying you about the surrounding vehicles. Plus, it helps you decide whether your decision to turn is safe or not. This way, you will know when it is the right time to turn or change lanes.

Versatile In Usage

A blind spot monitoring system comes in various types. You can get the one with visual alerts or audible notifications. Many drivers prefer sounds to alert them. So, they can get systems that produce chimes or beeps. On the other hand, blinking light systems are also available. Similarly, there are systems with both the alerts at specific times – all that to save you and your family from unwanted incidents.

How Does Blind Spot Monitoring System Work In Cars?

We have discussed the blind spot monitoring system in cars. Now, let’s see how it works. Here’s a step-by-step working mechanism:


  1. The system consists of sensors commonly located on the car’s wing mirrors or rear-bumper.
  2. The sensors detect the approaching vehicle within its vicinity at speed greater than 10 km/h.
  3. The sensors trigger a message. This message goes to the alerting system of a car’s blind spot monitoring.
  4. Lastly, the driver receives the message and makes a decision based on the alert.

If there is no approaching vehicle, the driver can easily change lanes. However, if they receive a notification of another car, the driver should stop changing lanes as it can result in a collision.

As mentioned earlier, a blind spot monitoring system can have different alerting mechanisms. Regardless of that, the basic framework of the system is the same.

Next generation blind spot detection mirrors are also available in the market. They are even more functional as they have reverse detection system and other functions. But the driver is still in charge and can control the vehicle throughout.

At the same time, not every blind spot monitoring system can detect smaller vehicles. That includes longboards, scooters, bicycles, and some motorbikes. On top of that, these systems will not sense stationary objects, like parked vehicles, poles, and guard rails.

What Can You Detect With a Blind Spot Monitoring System In Cars?

We have briefly mentioned what a blind spot monitor kit can not detect. Let’s go through the scenarios where it is very useful.


Car from Adjacent Lane

It is very important to monitor your next lane. That’s because a vehicle can approach your car in no time. The worst part is that they might not appear on your side mirror, increasing the chances of a collision.

However, a blind spot monitoring system in a car can solve this problem. It will notify the driver when a vehicle approaches yours from the adjacent lane. This way, you can give them space or stop changing your lane.

Car Changing Lanes

A vehicle changing its lanes is a threat, especially on highways. If you notice this move, the safest bet is to stick to your lane. But your rearview mirror might not provide visibility for this action.

A blind spot monitoring system can help you understand the vehicle’s movement. You will get an alert if a vehicle from nearby is changing its lane.

Car Entering Your Danger Zone

What’s the danger zone? The side area not visible in your rearview mirrors is called the danger zone or warning zone. It can cause a fatal accident because you can not see it. They are also called blind spots of a vehicle.

Blind spot monitoring sensors track the warning zone, alerting you of any approaching vehicle. It comes in handy when a vehicle is trying to overtake you. If you are changing lanes while the sensors detect a car, it is best to stop and stay in your lane.

How To Respond To A Blind Spot Monitoring System In Cars?

A new driver may get overwhelmed by the beeping sounds or blinking lights of a blind spot monitoring system in cars. So, how can you respond to it? Here’s all you need to know.


  • Stick to your lane if you are trying to change it, as it can result in a collision with another vehicle.
  • Check if the approaching vehicle is at a safe distance for you to make a turn or change lanes.
  • Always double-check before making a decision after alerts by your blind spot monitoring system.

What You Should Know About Blind Spot Monitoring System In Cars?

Let’s go through some important factors to consider about your blind spot monitoring system in a car.


  1. Blind spot monitoring sensor is a driving assistance system. It should not replace your driver’s training. We highly recommend you always make sure before making a decision on the road. A driver should not depend on the blind spot monitoring system.
  2. The sensors will not detect a vehicle approaching from your opposite direction as they only work for incoming vehicles.
  3. Your blind spot monitoring system will not alert you if a car slows speed like yours from behind in your lane.
  4. Blind spot monitoring systems come with various speed limits. It is better to pick an option that can identify a faster speed, which is quite common on highways.
  5. Not all blind spot monitoring systems will send visual cues for alerts. Some may only produce beeps or chimes. Make sure to check the manufacturer’s manual before using it.
  6. Many blind spot monitors may not detect slower vehicles. Most of them have a lower limit of 10 km/h.

Blind Spot Monitoring System Manual

Looking to learn about different blind spot monitoring systems in cars? No need to look further than our manuals.

Here is the list of detailed manuals of four universal blind spot monitoring systems in cars:

car bsd compare list

As you can see from the picture above, each system has its distinguishing features. They are important to consider when buying a blind spot monitoring system for your vehicle.


A blind spot monitoring system in cars is useful for staying safe on the road. It can help you maneuver on highways safely. You can always monitor the approaching vehicles, keeping you protected from collisions. Generally, you can get universal blind spot monitoring kits. They work on all cars, regardless of their brand and model.

Another benefit is you can install them inside the car or outside, depending on your preferences. The same goes for its different models based on audio and visual alerts. Blind spot monitoring systems are efficient as they offer you more control over your vehicle while upgrading your safety parameters.

If you have any questions, pls contact us!

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